Control box for motor

ABSTRACT

A motor, including: a body, including a housing, a stator, and a rotor; and a controller, including a control box, and a control board. The body is disposed at the top of the motor. The controller is disposed at the bottom of the motor. The control board is disposed in the control box. A debug window is disposed on side wall or at the bottom of the control box. A sealing cover is disposed on the debug window. The sealing cover can be opened. The control board can be exposed for wire connection, adjustment of parameters of electronic components, and fixation of a rotating shaft according to requirements of users for installation and use.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of International Patent ApplicationNo. PCT/CN2010/070357 with an international filing date of Jan. 26,2010, designating the United States, now pending, and further claimspriority benefits to Chinese Patent Application No. 200920055048.7 filedon Apr. 16, 2009. The contents of all of the aforementionedapplications, including any intervening amendments thereto, areincorporated herein by reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The invention relates to a motor.

2. Description of the Related Art

Nowadays, motors are widely used in various industries. However, thereare several problems with structure of motors: 1) no debug window isdisposed on the control box, and connection between a power line or asignal line and a control board is troublesome, parameters of electroniccomponents cannot be adjusted, and an impeller is disposed at a shaftend of the motor, which makes it difficult to fix a rotating shaftduring installation, and causes great inconvenience for installation; 2)the control board is disposed in the control box, since space is smalland the air does not flow therein, heat dissipation is a big problem,since power and heat dissipation of the pump motor are large,temperature raises quickly and becomes very high during operation, whichcauses that heat is difficult to be dissipated; 3) control functionsthereof are comparatively simple, which makes them unable to meetrequirements of users; 4) since the power line and the signal lineextend from side wall of the control box, tightness thereof is not goodenough, and installation and connection thereof are inconvenient; 5)structure thereof is unreasonable, control thereof is comparativelysimple, and no communication interface is left, which makes itinconvenient to communicate with the outside world; and 6) no structurefor fastening heat dissipation is disposed at the bottom of the controlbox.

SUMMARY OF THE INVENTION

In view of the above-described problem, it is an objective of theinvention to provide a motor that is capable of addressing theabove-mentioned problems.

To achieve the above objectives, in accordance with one embodiment ofthe invention, provided is a motor, comprising: a body, comprising ahousing, a stator, and a rotor, and a controller, comprising a controlbox, and a control board, the body is disposed at the top of the motor,the controller is disposed at the bottom of the motor, the control boardis disposed in the control box, a debug window is disposed on side wallor at the bottom of the control box, a sealing cover is disposed on thedebug window, and the sealing cover can be opened, and the control boardcan be exposed for wire connection, adjustment of parameters ofelectronic components, and fixation of a rotating shaft according torequirements of users for installation and use.

In a class of this embodiment, a sealing pad is disposed between thesealing cover and the control box.

In a class of this embodiment, the control board in the controlleremploys an overlapped structure comprising an upper layer, and a lowerlayer, the upper layer of the control board is a power board bearing apower conversion circuit, and the lower layer of the control board is acontrol board bearing a direct current brushless motor control circuit.

In a class of this embodiment, a rotary dip switch is disposed at thebottom of the control box, the rotary dip switch is electricallyconnected to the control board, and the rotary dip switch controlsdifferent functions of the motor.

In a class of this embodiment, all heating components on the power boardface upwards, a rectifier is tightly attached to a flange on side wallof the control box, an intelligent power module chip on the controlboard is tightly attached to the bottom of the control box, and thecontrol box is made of aluminum.

In a class of this embodiment, a hole is disposed at the bottom of thecontrol box, and operates to receive a LED, the LED is electricallyconnected to the control board, multiple protruding parts are disposedat the bottom of the control box, and a sealing washer is disposedbetween the control box and the lower end cover.

In a class of this embodiment, a hole is disposed at the bottom of thecontrol box, a serial port disposed on the control board is disposed inthe hole, and connected to an external circuit, the hole is a screwhole, and the screw hole is sealed via a plastic nut, and a sealingring.

In a class of this embodiment, the housing comprises an upper end cover,a metal case with a heat dissipation fin, and a lower end cover. Theupper end cover and the lower end cover are aluminum casting end covers,and the metal case is an expanding aluminum case.

In a class of this embodiment, the top of the control box is opening,the top of the control box is fit on the bottom of the lower end cover,part of the control box and that of the lower end cover extend from aside of the metal case and form a platform, a control cable and a powerline enters the control box via the platform, and is connected to thepower board via a terminal, and the power board is connected to thecontrol board via a terminal in a manner of insertion.

In a class of this embodiment, the control cable and the power line areled out from the platform via a sealing screw joint and a nut. Thesealing screw joint is fixed on the lower end cover via the nut, and alead is in a complete sealing condition.

Advantages of the invention comprise: the debug window is disposed onthe control box, which makes it convenient to open the sealing cover andto expose the debug window, to connect the power line and the controlcable to the control board, and to adjust the parameters of theelectronic components, and fixation of the rotating shaft via the debugwindow makes installation and debugging convenient.

BRIEF DESCRIPTION OF THE DRAWINGS

Further description of the invention will be given below in conjunctionwith accompanying drawings, in which:

FIG. 1 is a perspective view of a motor of the invention;

FIG. 2 is a cross-sectional view of a motor of the invention;

FIG. 3 is an exploded view of a motor of the invention;

FIG. 4 is a partially enlarged view of a controller of the invention;

FIG. 5 is a cross-sectional view of a control box of the invention;

FIG. 6 is an exploded view of a motor of the invention from anotherangle; and

FIG. 7 is a schematic diagram showing the connection between the controlbox as claimed and the external equipment.

DETAILED DESCRIPTION OF THE EMBODIMENTS

Further description of the invention will be given below in conjunctionwith specific embodiments and accompanying drawings.

As shown in FIGS. 1-6, a motor of the invention comprises a bodydisposed at the top thereof, and a controller disposed at the bottomthereof. The body comprises a housing, a stator 7, and a rotor 8. Thehousing comprises an upper end cover 2, a metal case 1 with a heatdissipation fin 9, and a lower end cover 3. The stator 7 and the rotor 8are disposed in the metal case 1, and the upper end cover 2 and thelower end cover 3 each has a bearing chamber for installing the rotor 8.

A debug window 23 is disposed on side wall or at the bottom of thecontrol box 4, a sealing cover 12 is disposed on the debug window 23,the sealing cover 12 can be opened, and the control board can be exposedfor wire connection, adjustment of parameters of electronic components,and fixation of a rotating shaft according to requirements of users forinstallation and use. A sealing pad 24 is disposed between the sealingcover 12 and the control box 4.

The controller comprises a control box 4, and a control board disposedin the control box 4. The control board in the controller employs anoverlapped structure comprising an upper layer, and a lower layer, theupper layer of the control board is a power board 5 bearing a powerconversion circuit, and the lower layer of the control board is acontrol board 6 bearing a direct current brushless motor controlcircuit. The top of the control box 4 is opening, the top of the controlbox 4 is fit on the bottom of the lower end cover 3, part of the controlbox 4 and that of the lower end cover 3 extend from a side of the metalcase and form a platform 30, a control cable and a power line 17 entersthe control box 4 via the platform, and is electrically connected to thepower board 5, and the power board is connected to the control board viaa terminal 16 in a manner of insertion. The control cable and the powerline 17 are led out from the platform via a sealing screw joint 13 and anut 14, the sealing screw joint 13 is fixed on the lower end cover 3 viathe nut 14, and a lead is in a complete sealing condition. A rotary dipswitch 22 is disposed at the bottom of the control box 4, the rotary dipswitch 22 is electrically connected to a lower-layer control board 6,and the rotary dip switch 22 controls different functions of the motor.All heating components 51 on the power board 5 face upwards, a rectifier28 is tightly attached to a flange 27 on the side wall, an intelligentpower module chip 15 on the control board 6 is tightly attached to thebottom of the control box 4, and the control box 4 is made of aluminum,which features fast heat dissipation. A hole 19 is disposed at thebottom of the control box 4, a serial port 31 disposed on the controlboard 6 is disposed in the hole, and connected to an external circuit61, the hole 19 is a screw hole, and the screw hole is sealed via aplastic nut 21, and a sealing ring 20. The upper end cover 2 and thelower end cover 3 are aluminum casting end covers, and the metal case 1is an expanding aluminum case. A hole 19 is disposed at the bottom ofthe control box 4, and operates to receive an LED 32, the LED 32 iselectrically connected to the control board, multiple protruding parts11 are disposed at the bottom of the control box 4, and a sealing washer18 is disposed between the control box 4 and the lower end cover 3, andoperates to solve a waterproof and dustproof problem.

If a plastic cover 12 of the debug window 23 on the side wall of thecontrol box 4 is opened, a socket for a power line, and that for acontrol cable are exposed, and a power line 17 can be connected thereto.The power line 17 is led out from the sealing screw joint 13 on thelower end cover 3, the sealing screw joint 13 is fixed on the lower endcover 3 via the nut 14, and the lead is in a complete sealing condition.

A groove 25 is disposed on one side of the control box 4, and anotherprotruding part 29 is disposed on the control box 4, and operates toattach surface of overheated electronic components to the protrudingpart 29 whereby speeding up heat dissipation. A mounting foot 26 isdisposed at the bottom of the control box 4, and multiple steps extendfrom inner side wall of the control box 4 and operate to support thecontrol board 6 and the power board 5. A screw hole is disposed on topend surface of the step, and operates to fix the control board 6 and thepower board 5 via a screw.

While particular embodiments of the invention have been shown anddescribed, it will be obvious to those skilled in the art that changesand modifications may be made without departing from the invention inits broader aspects, and therefore, the aim in the appended claims is tocover all such changes and modifications as fall within the true spiritand scope of the invention.

1. A motor, comprising: a body, comprising a housing, a stator, and arotor; and a controller, comprising a control box and a control board;wherein: said body is disposed at the top of said motor; said controlleris disposed at the bottom of said motor; said control board is disposedin said control box; a debug window is disposed on a side wall or at thebottom of said control box; a sealing cover is disposed on said debugwindow; said sealing cover can be opened so that said control board canbe exposed for wire connection, adjustment of parameters of electroniccomponents, and fixation of a rotating shaft according to requirementsof users for installation and use; said control board comprises an upperlayer and a lower layer; a power conversion circuit is disposed on saidupper layer; a direct current brushless motor control circuit isdisposed on said lower layer; a hole is disposed at the bottom of saidcontrol box, and operates to receive an LED; said LED is electricallyconnected to said control board; multiple protruding parts are disposedat the bottom of said control box; and a sealing washer is disposedbetween said control box and said lower end cover.
 2. A motor,comprising: a body, comprising a housing, a stator, and a rotor; and acontroller, comprising a control box and a control board; wherein: saidbody is disposed at the top of said motor; said controller is disposedat the bottom of said motor; said control board is disposed in saidcontrol box; a debug window is disposed on a side wall or at the bottomof said control box; a sealing cover is disposed on said debug window;said sealing cover can be opened so that said control board can beexposed for wire connection, adjustment of parameters of electroniccomponents, and fixation of a rotating shaft according to requirementsof users for installation and use; said control board comprises an upperlayer and a lower layer; a power conversion circuit is disposed on saidupper layer; a direct current brushless motor control circuit isdisposed on said lower layer; a hole is disposed at the bottom of saidcontrol box; a serial port disposed on said lower layer is disposed insaid hole, and connected to an external circuit; said hole is a screwhole; and said screw hole is sealed via a plastic nut and a sealingring.
 3. A motor, comprising: a body, comprising a housing, a stator,and a rotor; and a controller, comprising a control box and a controlboard; wherein: said housing comprises an upper end cover, a metal casewith a heat dissipation fin, and a lower end cover; said body isdisposed at the top of said motor; said controller is disposed at thebottom of said motor; said control board is disposed in said controlbox; a debug window is disposed on a side wall or at the bottom of saidcontrol box; a sealing cover is disposed on said debug window; saidsealing cover can be opened so that said control board can be exposedfor wire connection, adjustment of parameters of electronic components,and fixation of a rotating shaft according to requirements of users forinstallation and use; said control board comprises an upper layer and alower layer; a power conversion circuit is disposed on said upper layer;a direct current brushless motor control circuit is disposed on saidlower layer; the top of said control box is an opening; the top of saidcontrol box is fit on the bottom of said lower end cover; a part of saidcontrol box and a part of said lower end cover extend from a side ofsaid metal case and form a platform; a control cable and a power lineenters said control box via said platform, and is connected to saidpower board via a first terminal; and said power board is connected tosaid control board via a second terminal in a manner of insertion. 4.The motor of claim 3, wherein said control cable and said power line areled out from said platform via a sealing screw joint and a nut; saidsealing screw joint is fixed on said lower end cover via said nut; and alead is in a complete sealing condition.
 5. The motor of claim 1,wherein a sealing pad is disposed between said sealing cover and saidcontrol box.
 6. The motor of claim 1, wherein a rotary dip switch isdisposed at the bottom of said control box; said rotary dip switch iselectrically connected to said control board; and said rotary dip switchcontrols different functions of the motor.
 7. The motor of claim 1,wherein all heating components on said power board face upwards; arectifier is attached to a flange on a side wall of said control box; anintelligent power module chip on said control board is attached to thebottom of said control box; and said control box is made of aluminum. 8.The motor of claim 1, wherein said housing comprises an upper end cover,a metal case with a heat dissipation fin, and a lower end cover.